 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
IR3651SPBF Datasheet(PDF) 1 Page - International Rectifier |
|
||||||||||||||||||||||||||||||
IR3651SPBF Datasheet(HTML) 1 Page - International Rectifier |
|
|
1 / 19 page 
IR3651SPbF 10/11/2006 HIGH VOLTAGE SYNCHRONOUS PWM BUCK CONTROLLER Description The IR3651 is a high voltage PWM controller designed for high performance synchronous Buck DC/DC applications. The IR3651 drives a pair of external N-MOSFETs using a programmable switching frequency up to 400kHz allows flexibility to tune the operation of the IC to meet system level requirements, and synchronization allows the simplification of system level filter design. The output voltage can be precisely regulated using the internal 1.25V reference voltage for low voltage applications. Protection such as under voltage lockout and hiccup current limit are provided to give required system level security in the event of fault conditions. Features • High Voltage Operating up to 75V • Programmable Switching Frequency up to 400kHz • 1A Output Drive Capability • Precision Reference Voltage (1.25V) • Programmable Soft-Start • Programmable Over Current Protection • Hiccup Current Limit Using MOSFET R DS(on) sensing • External Frequency Synchronization • 14-pin SOIC Package Applications • 48V non-isolated DC to DC Converter • Embedded Telecom Systems • Networking and Computing Voltage Regulator • Distributed Point of Load Power Architectures • General high voltage DC/DC Converters Typical application Circuit ORDERING INFORMATION PKG PACKAGE PIN PARTS PARTS T&R DESIG DESCRIPTION COUNT PER TUBE PER REEL ORIANTAION S IR3651SPBF 14 55 ------- S IR3651STRPBF 14 -------- 2500 Fig A ROCset IR3651S Vcc Vb HDrv LDrv Fb Gnd Comp SS/SD C2 C3 C7 R4 Q1 Q2 L1 Vout C8 Vaux=12V PGnd SYNC Vin: 12V-75V DRVcc C1 R1 R2 Vs C4 C6 Rt R5 C5 C10 C9 R3 OCset Data Sheet No.PD94720 |
English ▼
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
